Science Adventure, commonly shortened to SciADV, is a video game series and Multimedia franchise consisting of interconnected science fiction stories created by Mages, initially in collaboration with Nitroplus. The main entries mostly take the form of visual novel video games.
The series currently consists of six mainline entries: the first entry of the series, 2008's Chaos;Head, is followed by Steins;Gate, Robotics;Notes, Chaos;Child, Occultic;Nine, Anonymous;Code, as well as the upcoming Steins;???. The series also includes several spin-off games based on Chaos;Head, Steins;Gate, Robotics;Notes, and Chaos;Child, as well as spin-offs in other mediums including anime, manga, light novels, audio dramas, and stage plays. All main entries except Anonymous;Code have received anime adaptations.
The main entries and their spin-offs all take place in the same fictional universe, focusing on several different science fiction themes. Chaos;Head and Chaos;Child focus on perception, Steins;Gate focuses on time travel and science, Robotics;Notes focuses on robotics and augmented reality, and Anonymous;Code focuses on hacking, time leaping, simulated reality among concepts from other games in the franchise. The player can affect the course of the story by making certain choices: in Chaos;Head and Chaos;Child this is done by choosing what kind of delusions the player characters experience. The choices in the Steins;Gate games and Robotics;Notes are made via messages set by the player via an in-game cell phone and tablet computer, respectively. The choices in Anonymous;Code are made using the hacking trigger and save/load ability.
The series is created and planned by Chiyomaru Shikura, founder of Mages and Chiyomaru Studio, composed by Takeshi Abo and Zizz Studio, written by Chiyomaru Shikura, Naotaka Hayashi along with other writers, and features character designs by artists including Mutsumi Sasaki, Huke, and Tomonori Fukuda. The developers aimed to make the series set within reality, as Shikura felt it made it more relatable and believable. The series has been commercially and critically successful both in Japan and internationally, far exceeding sales expectations for the genre and establishing Mages (previously 5pb.) as a game developer.
The series is published by Mages and Nitroplus in Japan, and by JAST USA, PQube, Mages, and Spike Chunsoft internationally. The visual novels Steins;Gate, Steins;Gate 0, Chaos;Child, Steins;Gate Elite, Steins;Gate: Linear Bounded Phenogram, 8-bit ADV Steins;Gate, Steins;Gate: My Darling's Embrace, Robotics;Notes Elite, Robotics;Notes Dash, Chaos;Head NoAH and Anonymous;Code have been officially localized in English.